Hi this is my first post so please be gentle I recently purchased a 1.6 16v Megane 2001that as little power untill about 1200 revs it then clears and fly's on idle the engine is lumpy (gearstick moving) previous owners had four coils fitted this was six months ago their black top ( all four including fitting £130.00) I've replaced plugs cleaned tdc map sensor checked for air leaks when you disconnect each Injector the engine speed falls after 1200 revs the engine drives extremley well it just this holding back all four plugs on removal where light brown .any help would be greatly appreciated and I thank anyone in advance for their help ps engine warning light does not illuminate nor flash ( it does work)